<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AND CONSOLIDATED INCOME STATEMENT OF GATX AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               MAR-31-2000
<CASH>                                             124
<SECURITIES>                                         0
<RECEIVABLES>                                    1,239
<ALLOWANCES>                                       113<F1>
<INVENTORY>                                          0
<CURRENT-ASSETS>                                     0<F2>
<PP&E>                                           5,792
<DEPRECIATION>                                   2,193
<TOTAL-ASSETS>                                   6,293
<CURRENT-LIABILITIES>                                0<F2>
<BONDS>                                          3,491<F3>
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            35
<OTHER-SE>                                         803
<TOTAL-LIABILITY-AND-EQUITY>                     6,293
<SALES>                                              0
<TOTAL-REVENUES>                                   467
<CGS>                                                0
<TOTAL-COSTS>                                      120<F4>
<OTHER-EXPENSES>                                    96<F5>
<LOSS-PROVISION>                                     2
<INTEREST-EXPENSE>                                  68
<INCOME-PRETAX>                                     67<F6>
<INCOME-TAX>                                        26
<INCOME-CONTINUING>                                 41
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                        41
<EPS-BASIC>                                        .84
<EPS-DILUTED>                                      .82
<FN>
<F1>RECEIVABLES CONSIST OF THREE COMPONENTS: TRADE ACCOUNTS OF 128 MILLION, FINANCE
LEASES OF 685 MILLION, AND SECURED LOANS OF 426 MILLION.
<F2>NOT APPLICABLE BECAUSE GATX HAS AN UNCLASSIFIED BALANCE SHEET.
<F3>BONDS CONSIST OF THREE COMPONENTS: RECOURSE LONG-TERM DEBT OF 2,779 MILLION
NONRECOURSE LONG-TERM DEBT OF 534 MILLION AND CAPITAL LEASE OBLIGATIONS OF 178
MILLION.
<F4>THIS VALUE REPRESENTS OPERATING EXPENSES ON THE CONSOLIDATED INCOME STATEMENT.
<F5>THIS VALUE REPRESENTS THE PROVISION FOR DEPRECIATION AND AMORTIZATION ON THE
CONSOLIDATED INCOME STATEMENT.
<F6>THIS VALUE REPRESENTS INCOME BEFORE INCOME TAXES.
</FN>